My thought would be to keep the ones that work and feel the best for you. Not sure if you want to have an eclectic mixed brand selection or if you would like to move to a single maker grouping of planes.
The other consideration might be if you need the space and want to get them gone soon or if you can hold on to them and sell them when you are interested in raising cash to purchase a higher priced tool.
jtk
"A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty."
- Sir Winston Churchill (1874-1965)